CN117293338A - Design method of cathode baffle type proton exchange membrane fuel cell - Google Patents
Design method of cathode baffle type proton exchange membrane fuel cell Download PDFInfo
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- CN117293338A CN117293338A CN202311294206.5A CN202311294206A CN117293338A CN 117293338 A CN117293338 A CN 117293338A CN 202311294206 A CN202311294206 A CN 202311294206A CN 117293338 A CN117293338 A CN 117293338A
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- Prior art keywords
- fuel cell
- exchange membrane
- proton exchange
- cathode
- membrane fuel
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- 239000000446 fuel Substances 0.000 title claims abstract description 43
- 239000012528 membrane Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000013461 design Methods 0.000 title claims abstract description 8
- 238000005457 optimization Methods 0.000 claims abstract description 18
- 238000004088 simulation Methods 0.000 claims abstract description 16
- 238000004364 calculation method Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000000376 reactant Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000009792 diffusion process Methods 0.000 claims description 9
- 230000003197 catalytic effect Effects 0.000 claims description 6
- 238000011156 evaluation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Fuel Cell (AREA)
Abstract
The invention relates to a design method of a cathode baffle type proton exchange membrane fuel cell, which comprises a cathode, wherein the cathode is a proton exchange membrane fuel cell baffle plate after structure optimization, and the optimization of the proton exchange membrane fuel cell baffle plate comprises the following steps: 1) Three-dimensional modeling is carried out on the proton exchange membrane fuel cell baffle plate, and a fuel cell single-flow-channel assembly body is combined; 2) Performing grid division on the single-flow-channel assembly of the single fuel cell to generate a grid structure, and performing finite element simulation analysis; 3) And carrying out optimization result analysis on the finite element simulation result: setting physical parameters, boundary conditions, relaxation factors, a calculation method, iterating steps, performing finite element simulation, and storing obtained results; 4) And analyzing the concentration of the reactant, the saturation of the liquid water, the current density distribution, the cloud picture, the variance and the range of the temperature distribution, summarizing the distribution rule, and transversely comparing the results of various models to obtain the optimal optimization parameters.
Description
Technical Field
The invention relates to a fuel cell, in particular to a design method of a cathode baffle type proton exchange membrane fuel cell.
Background
The bipolar plate plays roles in conveying reaction gas and cooling liquid, conducting electricity and conducting heat in the fuel cell, so that the optimization of the flow channel structure of the bipolar plate is important to the performance of the cell, and the baffle arrangement method of the bipolar plate flow channel is optimized to improve the energy conversion efficiency and the mass transfer efficiency of the cell.
The prior art still has some drawbacks in terms of baffle arrangement:
1) Conventional uniform arrangements have problems in terms of oxygen uniformity in localized areas;
2) Lattice arrangements can lead to flow maldistribution and localized pressure losses at high flow rates and high pressure drop conditions.
Therefore, it is desirable to provide a cathode baffle proton exchange membrane fuel cell design approach to address the above-mentioned issues.
Disclosure of Invention
The invention aims to provide a design method of a cathode baffle type proton exchange membrane fuel cell.
The invention realizes the aim through the following technical scheme:
the method for optimizing the proton exchange membrane fuel cell baffle comprises the following steps:
1) Three-dimensional modeling is carried out on the proton exchange membrane fuel cell baffle plate, and a fuel cell single-flow-channel assembly body is combined;
2) Performing grid division on the single-flow-channel assembly of the single fuel cell to generate a grid structure, and performing finite element simulation analysis;
3) And carrying out optimization result analysis on the finite element simulation result: setting physical parameters, boundary conditions, relaxation factors, a calculation method, iterating steps, performing finite element simulation, and storing obtained results;
4) And analyzing the concentration of the reactant, the saturation of the liquid water, the current density distribution, the cloud picture, the variance and the range of the temperature distribution, summarizing the distribution rule, and transversely comparing the results of various models to obtain the optimal optimization parameters.
Further, the baffle plate of the proton exchange membrane fuel cell has the height H and the windward length L f Baffle windward angle theta f Length L of leeward of baffle plate b Back wind angle θ of baffle b Baffle central structure length Lm.
Further, in the three-dimensional modeling, the fuel cell comprises a cathode, an anode and a proton exchange membrane, wherein the cathode and the anode respectively comprise a bipolar plate, a runner, a diffusion layer and a catalytic layer, and 9 structures are all arranged.
Further, the contact surface of the flow channel, the polar plate and the diffusion layer is bound to be 1 surface.
Further, in step 2), the mesh numbers of the diffusion layer, the catalytic layer and the proton exchange membrane structure in the direction perpendicular to the air flow are all 5, and the mesh sizes of the flow channel and the polar plate are 0.1mm.
Compared with the prior art, the proton exchange membrane fuel cell baffle plate with the optimized structure is used as the cathode, the simulation value is generated by carrying out finite element analysis on the cathode, and the simulation value is analyzed by carrying out the optimization result analysis, so that the value of the fuel cell flow channel structure can be accurately simulated and the optimization result evaluation can be carried out.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
Examples:
referring to fig. 1, the present embodiment shows a design method of a cathode baffle type proton exchange membrane fuel cell, including a cathode, wherein a cathode flow channel is a proton exchange membrane fuel cell baffle flow channel after structure optimization, and the optimization method of a proton exchange membrane fuel cell baffle comprises the following steps:
1) Three-dimensional modeling is carried out on the proton exchange membrane fuel cell baffle plate, and a fuel cell single-flow-channel assembly body is combined;
2) Performing grid division on the single-flow-channel assembly of the single fuel cell to generate a grid structure, and performing finite element simulation analysis;
3) And carrying out optimization result analysis on the finite element simulation result: setting physical parameters, boundary conditions, relaxation factors, a calculation method, iterating steps, performing finite element simulation, and storing obtained results;
4) And analyzing the concentration of the reactant, the saturation of the liquid water, the current density distribution, the cloud picture, the variance and the range of the temperature distribution, summarizing the distribution rule, and transversely comparing the results of various models to obtain the optimal optimization parameters.
Wherein:
baffle plate of proton exchange membrane fuel cell, baffle plate height H and baffle plate windward length L f Baffle windward angle theta f Length L of leeward of baffle plate b Back wind angle θ of baffle b Baffle central structure length Lm.
In three-dimensional modeling, the fuel cell comprises a cathode, an anode and a proton exchange membrane, wherein the cathode and the anode respectively comprise a bipolar plate, a runner, a diffusion layer, a catalytic layer and 9 structures.
The contact surface of the runner, the polar plate and the diffusion layer is bound to be 1 surface.
In the step 2), the grid numbers of the diffusion layer, the catalytic layer and the proton exchange membrane structure in the direction perpendicular to the airflow direction are all 5, and the grid sizes of the flow channel and the polar plate are 0.1mm.
Compared with the prior art, the proton exchange membrane fuel cell baffle plate with the optimized structure is used as the cathode, the simulation value is generated by carrying out finite element analysis on the cathode, and the simulation value is analyzed by carrying out the optimization result analysis, so that the value of the fuel cell flow channel structure can be accurately simulated and the optimization result evaluation can be carried out.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (5)
1. A design method of a cathode baffle type proton exchange membrane fuel cell is characterized in that: the method comprises a cathode, wherein the cathode is a proton exchange membrane fuel cell baffle plate subjected to structural optimization, and the proton exchange membrane fuel cell baffle plate is optimized, and comprises the following steps:
1) Three-dimensional modeling is carried out on the proton exchange membrane fuel cell baffle plate, and a fuel cell single-flow-channel assembly body is combined;
2) Performing grid division on the single-flow-channel assembly of the single fuel cell to generate a grid structure, and performing finite element simulation analysis;
3) And carrying out optimization result analysis on the finite element simulation result: setting physical parameters, boundary conditions, relaxation factors, a calculation method, iterating steps, performing finite element simulation, and storing obtained results;
4) And analyzing the concentration of the reactant, the saturation of the liquid water, the current density distribution, the cloud picture, the variance and the range of the temperature distribution, summarizing the distribution rule, and transversely comparing the results of various models to obtain the optimal optimization parameters.
2. The method for designing a cathode-baffle proton exchange membrane fuel cell as claimed in claim 1, wherein: baffle plate of proton exchange membrane fuel cell, baffle plate height H and baffle plate windward length L f Baffle windward angle theta f Length L of leeward of baffle plate b Back wind angle θ of baffle b Baffle central structure length Lm.
3. The method for designing a cathode-baffle proton exchange membrane fuel cell as claimed in claim 2, wherein: in three-dimensional modeling, the fuel cell comprises a cathode, an anode and a proton exchange membrane, wherein the cathode and the anode respectively comprise a bipolar plate, a runner, a diffusion layer, a catalytic layer and 9 structures.
4. A method of designing a cathode-baffle proton exchange membrane fuel cell as claimed in claim 3, wherein: the contact surface of the runner, the polar plate and the diffusion layer is bound to be 1 surface.
5. The method for designing a cathode-baffle proton exchange membrane fuel cell as claimed in claim 4, wherein: in the step 2), the grid numbers of the diffusion layer, the catalytic layer and the proton exchange membrane structure in the direction perpendicular to the airflow direction are all 5, and the grid sizes of the flow channel and the polar plate are 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311294206.5A CN117293338A (en) | 2023-10-08 | 2023-10-08 | Design method of cathode baffle type proton exchange membrane fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311294206.5A CN117293338A (en) | 2023-10-08 | 2023-10-08 | Design method of cathode baffle type proton exchange membrane fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117293338A true CN117293338A (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311294206.5A Pending CN117293338A (en) | 2023-10-08 | 2023-10-08 | Design method of cathode baffle type proton exchange membrane fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117293338A (en) |
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2023
- 2023-10-08 CN CN202311294206.5A patent/CN117293338A/en active Pending
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